surfacerect.hxx

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#ifndef INCLUDED_CANVAS_SOURCE_TOOLS_SURFACERECT_HXX
#define INCLUDED_CANVAS_SOURCE_TOOLS_SURFACERECT_HXX

#include <basegfx/point/b2ipoint.hxx>
#include <basegfx/vector/b2isize.hxx>

namespace canvas
{
    struct SurfaceRect
    {
        ::basegfx::B2IPoint maPos;
        ::basegfx::B2ISize  maSize;

        explicit SurfaceRect( const ::basegfx::B2ISize &rSize ) :
            maPos(),
            maSize(rSize)
        {
        }

        bool pointInside( sal_Int32 px, sal_Int32 py ) const
        {
            const sal_Int32 x1(maPos.getX());
            const sal_Int32 y1(maPos.getY());
            const sal_Int32 x2(x1 + maSize.getX());
            const sal_Int32 y2(y1 + maSize.getY());
            if(px  < x1) return false;
            if(px >= x2) return false;
            if(py  < y1) return false;
            if(py >= y2) return false;
            return true;
        }

        bool intersection( const SurfaceRect& r ) const
        {
            const sal_Int32 x1(maPos.getX());
            const sal_Int32 y1(maPos.getY());
            const sal_Int32 x1w(x1 + maSize.getX() - 1);
            const sal_Int32 y1h(y1 + maSize.getY() - 1);

            const sal_Int32 x2(r.maPos.getX());
            const sal_Int32 y2(r.maPos.getY());
            const sal_Int32 x2w(x2 + r.maSize.getX() - 1);
            const sal_Int32 y2h(y2 + r.maSize.getY() - 1);

            return !((x1w < x2) || (x2w < x1) || (y1h < y2) || (y2h < y1));
        }

        bool inside( const SurfaceRect& r ) const
        {
            const sal_Int32 x1(maPos.getX());
            const sal_Int32 y1(maPos.getY());
            const sal_Int32 x2(x1 + maSize.getX() - 1);
            const sal_Int32 y2(y1 + maSize.getY() - 1);
            if(!(r.pointInside(x1,y1))) return false;
            if(!(r.pointInside(x2,y2))) return false;
            return true;
        }
    };
}

#endif

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